8.直接写出得数.
8÷0.4= | 3.3×0.3= | 0.05+2.5= | 5.5×0.8= |
2-0.02= | 2.4×0.2= | 3.6÷0.06= | 0.01×0= |
3.96×2.11≈ | 0.85×1.22≈ | 3.26÷0.81≈ | 7.26÷1.98≈ |
7.72×24的积是7.2×0.24的积的( )倍.
A. | 10 | B. | 100 | C. | 1000 |
6.两个数的商是7.6,若被除数不变,除数扩大10倍,商是( )
A. | 76 | B. | 7.6 | C. | 0.76 |
20.比一比,看谁的速度最快,直接写出得数.
0 161512 161520 161526 161530 161536 161538 161542 161548 161550 161556 161562 161566 161568 161572 161578 161580 161586 161590 161592 161596 161598 161602 161604 161606 161607 161608 161610 161611 161612 161614 161616 161620 161622 161626 161628 161632 161638 161640 161646 161650 161652 161656 161662 161668 161670 161676 161680 161682 161688 161692 161698 161706 199269
320÷40= | 250×30= | 80÷80= | 190×50= |
280-125= | 950×70= | 449+361= | 400-300= |
380÷38= | 330÷11= | 360÷60= | 400×25= |
800÷80= | 760×40= | 240÷80= | 800÷20= |
620÷20= | 145×6= | 810÷90= | 100÷50= |